/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:05:24,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:05:24,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:05:24,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:05:24,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:05:24,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:05:24,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:05:24,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:05:24,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:05:24,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:05:24,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:05:24,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:05:24,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:05:24,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:05:24,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:05:24,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:05:24,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:05:24,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:05:24,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:05:24,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:05:24,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:05:24,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:05:24,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:05:24,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:05:24,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 05:05:24,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:05:24,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:05:24,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:05:24,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:05:24,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:05:24,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:05:24,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:05:24,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:05:24,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:05:24,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:05:24,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:05:24,128 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf [2020-10-16 05:05:24,161 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:05:24,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:05:24,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:05:24,163 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:05:24,163 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:05:24,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:05:24,164 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:05:24,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:05:24,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:05:24,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:05:24,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:05:24,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:05:24,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:05:24,165 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:05:24,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:05:24,165 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:05:24,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:05:24,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:05:24,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:05:24,166 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:05:24,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:05:24,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:05:24,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:05:24,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:05:24,167 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:05:24,167 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:05:24,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:05:24,168 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:05:24,168 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:05:24,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:05:24,493 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:05:24,496 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:05:24,498 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:05:24,499 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:05:24,499 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-10-16 05:05:24,575 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eba91016/34dd0f18dbf648aca73298f869326aa5/FLAGa9a10d013 [2020-10-16 05:05:25,113 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:05:25,114 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-10-16 05:05:25,133 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eba91016/34dd0f18dbf648aca73298f869326aa5/FLAGa9a10d013 [2020-10-16 05:05:25,407 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eba91016/34dd0f18dbf648aca73298f869326aa5 [2020-10-16 05:05:25,417 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:05:25,419 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:05:25,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:05:25,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:05:25,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:05:25,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:05:25" (1/1) ... [2020-10-16 05:05:25,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7160f1ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:25, skipping insertion in model container [2020-10-16 05:05:25,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:05:25" (1/1) ... [2020-10-16 05:05:25,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:05:25,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:05:26,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:05:26,017 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:05:26,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:05:26,183 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:05:26,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:26 WrapperNode [2020-10-16 05:05:26,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:05:26,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:05:26,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:05:26,185 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:05:26,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:26" (1/1) ... [2020-10-16 05:05:26,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:26" (1/1) ... [2020-10-16 05:05:26,243 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:05:26,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:05:26,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:05:26,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:05:26,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:26" (1/1) ... [2020-10-16 05:05:26,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:26" (1/1) ... [2020-10-16 05:05:26,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:26" (1/1) ... [2020-10-16 05:05:26,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:26" (1/1) ... [2020-10-16 05:05:26,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:26" (1/1) ... [2020-10-16 05:05:26,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:26" (1/1) ... [2020-10-16 05:05:26,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:26" (1/1) ... [2020-10-16 05:05:26,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:05:26,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:05:26,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:05:26,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:05:26,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:05:26,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:05:26,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:05:26,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:05:26,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:05:26,347 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:05:26,347 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:05:26,347 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:05:26,348 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:05:26,348 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 05:05:26,348 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 05:05:26,348 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-16 05:05:26,348 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-16 05:05:26,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:05:26,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:05:26,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:05:26,351 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 05:05:26,752 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:05:26,752 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:05:26,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:05:26 BoogieIcfgContainer [2020-10-16 05:05:26,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:05:26,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:05:26,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:05:26,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:05:26,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:05:25" (1/3) ... [2020-10-16 05:05:26,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee1e256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:05:26, skipping insertion in model container [2020-10-16 05:05:26,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:05:26" (2/3) ... [2020-10-16 05:05:26,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee1e256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:05:26, skipping insertion in model container [2020-10-16 05:05:26,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:05:26" (3/3) ... [2020-10-16 05:05:26,764 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_tso.opt.i [2020-10-16 05:05:26,777 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:05:26,785 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:05:26,786 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:05:26,817 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,817 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,817 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,817 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,818 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,818 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,819 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,819 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,819 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,819 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,820 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,820 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,820 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,821 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,821 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,821 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,821 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,822 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,822 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,823 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,823 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,823 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,823 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,824 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,827 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,828 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,828 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,828 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,834 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,834 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,834 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,835 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,836 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,837 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,837 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,837 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,840 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,841 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,841 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,841 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:05:26,861 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 05:05:26,883 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:05:26,884 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:05:26,884 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:05:26,884 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:05:26,884 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:05:26,884 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:05:26,884 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:05:26,884 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:05:26,898 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-10-16 05:05:26,956 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-10-16 05:05:26,957 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:05:26,963 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-10-16 05:05:26,963 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 80 transitions, 180 flow [2020-10-16 05:05:26,969 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 63 transitions, 138 flow [2020-10-16 05:05:26,972 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:05:26,975 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 63 transitions, 138 flow [2020-10-16 05:05:26,978 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 63 transitions, 138 flow [2020-10-16 05:05:26,979 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 63 transitions, 138 flow [2020-10-16 05:05:27,001 INFO L129 PetriNetUnfolder]: 1/63 cut-off events. [2020-10-16 05:05:27,002 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:05:27,003 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 63 events. 1/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-16 05:05:27,005 INFO L117 LiptonReduction]: Number of co-enabled transitions 1250 [2020-10-16 05:05:28,531 INFO L132 LiptonReduction]: Checked pairs total: 2211 [2020-10-16 05:05:28,531 INFO L134 LiptonReduction]: Total number of compositions: 47 [2020-10-16 05:05:28,534 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1564 [2020-10-16 05:05:28,548 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 05:05:28,548 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:05:28,549 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:28,550 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:28,550 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:28,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:28,559 INFO L82 PathProgramCache]: Analyzing trace with hash 599542484, now seen corresponding path program 1 times [2020-10-16 05:05:28,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:28,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265482866] [2020-10-16 05:05:28,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:28,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:28,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265482866] [2020-10-16 05:05:28,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:28,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:05:28,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449561758] [2020-10-16 05:05:28,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:05:28,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:28,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:05:28,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:05:28,892 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 127 [2020-10-16 05:05:28,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 54 flow. Second operand 3 states. [2020-10-16 05:05:28,895 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:28,895 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 127 [2020-10-16 05:05:28,897 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:28,933 INFO L129 PetriNetUnfolder]: 12/47 cut-off events. [2020-10-16 05:05:28,933 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:05:28,934 INFO L80 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 47 events. 12/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 104 event pairs, 2 based on Foata normal form. 8/51 useless extension candidates. Maximal degree in co-relation 76. Up to 25 conditions per place. [2020-10-16 05:05:28,936 INFO L132 encePairwiseOnDemand]: 122/127 looper letters, 5 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2020-10-16 05:05:28,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 23 transitions, 74 flow [2020-10-16 05:05:28,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:05:28,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:05:28,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 326 transitions. [2020-10-16 05:05:28,955 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8556430446194225 [2020-10-16 05:05:28,956 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 326 transitions. [2020-10-16 05:05:28,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 326 transitions. [2020-10-16 05:05:28,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:28,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 326 transitions. [2020-10-16 05:05:28,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:05:28,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:05:28,973 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:05:29,000 INFO L185 Difference]: Start difference. First operand has 33 places, 21 transitions, 54 flow. Second operand 3 states and 326 transitions. [2020-10-16 05:05:29,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 23 transitions, 74 flow [2020-10-16 05:05:29,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 23 transitions, 70 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-16 05:05:29,007 INFO L241 Difference]: Finished difference. Result has 32 places, 22 transitions, 67 flow [2020-10-16 05:05:29,010 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2020-10-16 05:05:29,011 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2020-10-16 05:05:29,011 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 67 flow [2020-10-16 05:05:29,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:05:29,011 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:29,011 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:29,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:05:29,012 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:29,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:29,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1405922977, now seen corresponding path program 1 times [2020-10-16 05:05:29,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:29,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713602009] [2020-10-16 05:05:29,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:29,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:29,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713602009] [2020-10-16 05:05:29,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:29,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:05:29,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109636304] [2020-10-16 05:05:29,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:05:29,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:29,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:05:29,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:05:29,068 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 127 [2020-10-16 05:05:29,069 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 67 flow. Second operand 3 states. [2020-10-16 05:05:29,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:29,069 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 127 [2020-10-16 05:05:29,069 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:29,080 INFO L129 PetriNetUnfolder]: 3/28 cut-off events. [2020-10-16 05:05:29,081 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-16 05:05:29,082 INFO L80 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 28 events. 3/28 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 1 based on Foata normal form. 2/29 useless extension candidates. Maximal degree in co-relation 47. Up to 10 conditions per place. [2020-10-16 05:05:29,082 INFO L132 encePairwiseOnDemand]: 124/127 looper letters, 1 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2020-10-16 05:05:29,082 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 22 transitions, 73 flow [2020-10-16 05:05:29,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:05:29,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:05:29,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2020-10-16 05:05:29,086 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8608923884514436 [2020-10-16 05:05:29,086 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2020-10-16 05:05:29,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2020-10-16 05:05:29,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:29,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2020-10-16 05:05:29,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:05:29,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:05:29,090 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:05:29,090 INFO L185 Difference]: Start difference. First operand has 32 places, 22 transitions, 67 flow. Second operand 3 states and 328 transitions. [2020-10-16 05:05:29,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 22 transitions, 73 flow [2020-10-16 05:05:29,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 22 transitions, 70 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:05:29,091 INFO L241 Difference]: Finished difference. Result has 34 places, 22 transitions, 72 flow [2020-10-16 05:05:29,092 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=22} [2020-10-16 05:05:29,092 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2020-10-16 05:05:29,093 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 22 transitions, 72 flow [2020-10-16 05:05:29,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:05:29,093 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:29,093 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:29,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:05:29,094 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:29,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:29,094 INFO L82 PathProgramCache]: Analyzing trace with hash 633938633, now seen corresponding path program 1 times [2020-10-16 05:05:29,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:29,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180115872] [2020-10-16 05:05:29,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:29,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:29,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180115872] [2020-10-16 05:05:29,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:29,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:05:29,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109371988] [2020-10-16 05:05:29,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:05:29,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:29,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:05:29,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:05:29,144 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 127 [2020-10-16 05:05:29,144 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 72 flow. Second operand 3 states. [2020-10-16 05:05:29,144 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:29,144 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 127 [2020-10-16 05:05:29,144 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:29,158 INFO L129 PetriNetUnfolder]: 3/28 cut-off events. [2020-10-16 05:05:29,158 INFO L130 PetriNetUnfolder]: For 11/12 co-relation queries the response was YES. [2020-10-16 05:05:29,159 INFO L80 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 28 events. 3/28 cut-off events. For 11/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 1 based on Foata normal form. 1/28 useless extension candidates. Maximal degree in co-relation 50. Up to 10 conditions per place. [2020-10-16 05:05:29,159 INFO L132 encePairwiseOnDemand]: 124/127 looper letters, 1 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2020-10-16 05:05:29,159 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 22 transitions, 78 flow [2020-10-16 05:05:29,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:05:29,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:05:29,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2020-10-16 05:05:29,162 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8608923884514436 [2020-10-16 05:05:29,162 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2020-10-16 05:05:29,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2020-10-16 05:05:29,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:29,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2020-10-16 05:05:29,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:05:29,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:05:29,165 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:05:29,165 INFO L185 Difference]: Start difference. First operand has 34 places, 22 transitions, 72 flow. Second operand 3 states and 328 transitions. [2020-10-16 05:05:29,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 22 transitions, 78 flow [2020-10-16 05:05:29,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 22 transitions, 74 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:05:29,167 INFO L241 Difference]: Finished difference. Result has 35 places, 22 transitions, 76 flow [2020-10-16 05:05:29,167 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=35, PETRI_TRANSITIONS=22} [2020-10-16 05:05:29,167 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2020-10-16 05:05:29,167 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 76 flow [2020-10-16 05:05:29,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:05:29,168 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:29,168 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:29,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:05:29,168 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:29,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:29,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1799443888, now seen corresponding path program 1 times [2020-10-16 05:05:29,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:29,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169196168] [2020-10-16 05:05:29,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:29,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:29,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169196168] [2020-10-16 05:05:29,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:29,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:05:29,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732064784] [2020-10-16 05:05:29,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:05:29,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:29,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:05:29,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:05:29,207 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 127 [2020-10-16 05:05:29,208 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 76 flow. Second operand 3 states. [2020-10-16 05:05:29,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:29,208 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 127 [2020-10-16 05:05:29,208 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:29,233 INFO L129 PetriNetUnfolder]: 4/41 cut-off events. [2020-10-16 05:05:29,233 INFO L130 PetriNetUnfolder]: For 27/38 co-relation queries the response was YES. [2020-10-16 05:05:29,234 INFO L80 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 41 events. 4/41 cut-off events. For 27/38 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 101 event pairs, 2 based on Foata normal form. 5/44 useless extension candidates. Maximal degree in co-relation 83. Up to 12 conditions per place. [2020-10-16 05:05:29,234 INFO L132 encePairwiseOnDemand]: 124/127 looper letters, 5 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2020-10-16 05:05:29,234 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 23 transitions, 95 flow [2020-10-16 05:05:29,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:05:29,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:05:29,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2020-10-16 05:05:29,236 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.847769028871391 [2020-10-16 05:05:29,236 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 323 transitions. [2020-10-16 05:05:29,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 323 transitions. [2020-10-16 05:05:29,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:29,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 323 transitions. [2020-10-16 05:05:29,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:05:29,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:05:29,239 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:05:29,239 INFO L185 Difference]: Start difference. First operand has 35 places, 22 transitions, 76 flow. Second operand 3 states and 323 transitions. [2020-10-16 05:05:29,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 23 transitions, 95 flow [2020-10-16 05:05:29,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 23 transitions, 91 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:05:29,241 INFO L241 Difference]: Finished difference. Result has 36 places, 22 transitions, 83 flow [2020-10-16 05:05:29,241 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=36, PETRI_TRANSITIONS=22} [2020-10-16 05:05:29,242 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2020-10-16 05:05:29,242 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 22 transitions, 83 flow [2020-10-16 05:05:29,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:05:29,242 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:29,242 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:29,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:05:29,243 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:29,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:29,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1823517868, now seen corresponding path program 1 times [2020-10-16 05:05:29,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:29,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118816317] [2020-10-16 05:05:29,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:29,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:29,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118816317] [2020-10-16 05:05:29,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:29,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:05:29,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672449378] [2020-10-16 05:05:29,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:05:29,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:29,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:05:29,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:05:29,288 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 127 [2020-10-16 05:05:29,288 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 22 transitions, 83 flow. Second operand 4 states. [2020-10-16 05:05:29,288 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:29,288 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 127 [2020-10-16 05:05:29,289 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:29,324 INFO L129 PetriNetUnfolder]: 8/72 cut-off events. [2020-10-16 05:05:29,324 INFO L130 PetriNetUnfolder]: For 164/197 co-relation queries the response was YES. [2020-10-16 05:05:29,325 INFO L80 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 72 events. 8/72 cut-off events. For 164/197 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 309 event pairs, 0 based on Foata normal form. 5/73 useless extension candidates. Maximal degree in co-relation 164. Up to 23 conditions per place. [2020-10-16 05:05:29,326 INFO L132 encePairwiseOnDemand]: 122/127 looper letters, 5 selfloop transitions, 4 changer transitions 1/27 dead transitions. [2020-10-16 05:05:29,326 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 27 transitions, 114 flow [2020-10-16 05:05:29,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:05:29,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:05:29,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 420 transitions. [2020-10-16 05:05:29,329 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8267716535433071 [2020-10-16 05:05:29,329 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 420 transitions. [2020-10-16 05:05:29,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 420 transitions. [2020-10-16 05:05:29,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:29,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 420 transitions. [2020-10-16 05:05:29,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:05:29,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:05:29,332 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:05:29,332 INFO L185 Difference]: Start difference. First operand has 36 places, 22 transitions, 83 flow. Second operand 4 states and 420 transitions. [2020-10-16 05:05:29,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 27 transitions, 114 flow [2020-10-16 05:05:29,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 27 transitions, 109 flow, removed 1 selfloop flow, removed 1 redundant places. [2020-10-16 05:05:29,335 INFO L241 Difference]: Finished difference. Result has 40 places, 24 transitions, 104 flow [2020-10-16 05:05:29,335 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=40, PETRI_TRANSITIONS=24} [2020-10-16 05:05:29,335 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2020-10-16 05:05:29,335 INFO L481 AbstractCegarLoop]: Abstraction has has 40 places, 24 transitions, 104 flow [2020-10-16 05:05:29,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:05:29,336 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:29,336 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:29,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 05:05:29,336 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:29,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:29,337 INFO L82 PathProgramCache]: Analyzing trace with hash -229681398, now seen corresponding path program 1 times [2020-10-16 05:05:29,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:29,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924276023] [2020-10-16 05:05:29,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:29,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:29,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924276023] [2020-10-16 05:05:29,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:29,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:05:29,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122692409] [2020-10-16 05:05:29,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:05:29,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:29,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:05:29,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:05:29,375 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 127 [2020-10-16 05:05:29,376 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 24 transitions, 104 flow. Second operand 4 states. [2020-10-16 05:05:29,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:29,376 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 127 [2020-10-16 05:05:29,376 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:29,407 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2020-10-16 05:05:29,407 INFO L130 PetriNetUnfolder]: For 250/294 co-relation queries the response was YES. [2020-10-16 05:05:29,408 INFO L80 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 74 events. 7/74 cut-off events. For 250/294 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 335 event pairs, 2 based on Foata normal form. 5/74 useless extension candidates. Maximal degree in co-relation 190. Up to 19 conditions per place. [2020-10-16 05:05:29,408 INFO L132 encePairwiseOnDemand]: 122/127 looper letters, 4 selfloop transitions, 4 changer transitions 2/27 dead transitions. [2020-10-16 05:05:29,408 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 27 transitions, 137 flow [2020-10-16 05:05:29,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:05:29,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:05:29,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 415 transitions. [2020-10-16 05:05:29,411 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8169291338582677 [2020-10-16 05:05:29,411 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 415 transitions. [2020-10-16 05:05:29,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 415 transitions. [2020-10-16 05:05:29,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:29,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 415 transitions. [2020-10-16 05:05:29,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:05:29,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:05:29,414 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:05:29,414 INFO L185 Difference]: Start difference. First operand has 40 places, 24 transitions, 104 flow. Second operand 4 states and 415 transitions. [2020-10-16 05:05:29,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 27 transitions, 137 flow [2020-10-16 05:05:29,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 27 transitions, 130 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 05:05:29,417 INFO L241 Difference]: Finished difference. Result has 42 places, 24 transitions, 110 flow [2020-10-16 05:05:29,418 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=42, PETRI_TRANSITIONS=24} [2020-10-16 05:05:29,418 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2020-10-16 05:05:29,418 INFO L481 AbstractCegarLoop]: Abstraction has has 42 places, 24 transitions, 110 flow [2020-10-16 05:05:29,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:05:29,418 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:29,419 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:29,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 05:05:29,419 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:29,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:29,419 INFO L82 PathProgramCache]: Analyzing trace with hash -696474914, now seen corresponding path program 2 times [2020-10-16 05:05:29,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:29,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012690299] [2020-10-16 05:05:29,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:29,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:29,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012690299] [2020-10-16 05:05:29,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:29,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:05:29,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782932468] [2020-10-16 05:05:29,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:05:29,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:29,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:05:29,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:05:29,453 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 127 [2020-10-16 05:05:29,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 24 transitions, 110 flow. Second operand 4 states. [2020-10-16 05:05:29,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:29,454 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 127 [2020-10-16 05:05:29,454 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:29,489 INFO L129 PetriNetUnfolder]: 0/54 cut-off events. [2020-10-16 05:05:29,490 INFO L130 PetriNetUnfolder]: For 170/180 co-relation queries the response was YES. [2020-10-16 05:05:29,490 INFO L80 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 54 events. 0/54 cut-off events. For 170/180 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 202 event pairs, 0 based on Foata normal form. 5/58 useless extension candidates. Maximal degree in co-relation 0. Up to 13 conditions per place. [2020-10-16 05:05:29,490 INFO L132 encePairwiseOnDemand]: 123/127 looper letters, 4 selfloop transitions, 3 changer transitions 2/26 dead transitions. [2020-10-16 05:05:29,491 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 26 transitions, 136 flow [2020-10-16 05:05:29,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:05:29,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:05:29,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 521 transitions. [2020-10-16 05:05:29,493 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8204724409448819 [2020-10-16 05:05:29,493 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 521 transitions. [2020-10-16 05:05:29,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 521 transitions. [2020-10-16 05:05:29,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:29,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 521 transitions. [2020-10-16 05:05:29,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:05:29,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:05:29,496 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:05:29,497 INFO L185 Difference]: Start difference. First operand has 42 places, 24 transitions, 110 flow. Second operand 5 states and 521 transitions. [2020-10-16 05:05:29,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 26 transitions, 136 flow [2020-10-16 05:05:29,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 26 transitions, 124 flow, removed 1 selfloop flow, removed 4 redundant places. [2020-10-16 05:05:29,499 INFO L241 Difference]: Finished difference. Result has 45 places, 24 transitions, 115 flow [2020-10-16 05:05:29,499 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=115, PETRI_PLACES=45, PETRI_TRANSITIONS=24} [2020-10-16 05:05:29,500 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2020-10-16 05:05:29,500 INFO L481 AbstractCegarLoop]: Abstraction has has 45 places, 24 transitions, 115 flow [2020-10-16 05:05:29,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:05:29,500 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:29,500 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:29,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 05:05:29,501 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:29,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:29,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1838072000, now seen corresponding path program 1 times [2020-10-16 05:05:29,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:29,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103433172] [2020-10-16 05:05:29,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:29,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:29,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103433172] [2020-10-16 05:05:29,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:29,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:05:29,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575772588] [2020-10-16 05:05:29,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:05:29,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:29,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:05:29,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:05:29,571 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 127 [2020-10-16 05:05:29,571 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 24 transitions, 115 flow. Second operand 4 states. [2020-10-16 05:05:29,572 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:29,572 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 127 [2020-10-16 05:05:29,572 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:29,666 INFO L129 PetriNetUnfolder]: 248/471 cut-off events. [2020-10-16 05:05:29,667 INFO L130 PetriNetUnfolder]: For 1596/1680 co-relation queries the response was YES. [2020-10-16 05:05:29,669 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1124 conditions, 471 events. 248/471 cut-off events. For 1596/1680 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 2648 event pairs, 120 based on Foata normal form. 24/458 useless extension candidates. Maximal degree in co-relation 1107. Up to 328 conditions per place. [2020-10-16 05:05:29,671 INFO L132 encePairwiseOnDemand]: 120/127 looper letters, 6 selfloop transitions, 5 changer transitions 9/37 dead transitions. [2020-10-16 05:05:29,671 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 37 transitions, 181 flow [2020-10-16 05:05:29,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:05:29,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:05:29,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 492 transitions. [2020-10-16 05:05:29,674 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7748031496062993 [2020-10-16 05:05:29,674 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 492 transitions. [2020-10-16 05:05:29,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 492 transitions. [2020-10-16 05:05:29,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:29,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 492 transitions. [2020-10-16 05:05:29,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:05:29,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:05:29,677 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:05:29,677 INFO L185 Difference]: Start difference. First operand has 45 places, 24 transitions, 115 flow. Second operand 5 states and 492 transitions. [2020-10-16 05:05:29,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 37 transitions, 181 flow [2020-10-16 05:05:29,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 37 transitions, 172 flow, removed 3 selfloop flow, removed 3 redundant places. [2020-10-16 05:05:29,680 INFO L241 Difference]: Finished difference. Result has 47 places, 28 transitions, 151 flow [2020-10-16 05:05:29,680 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=151, PETRI_PLACES=47, PETRI_TRANSITIONS=28} [2020-10-16 05:05:29,681 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2020-10-16 05:05:29,681 INFO L481 AbstractCegarLoop]: Abstraction has has 47 places, 28 transitions, 151 flow [2020-10-16 05:05:29,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:05:29,681 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:29,681 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:29,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 05:05:29,682 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:29,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:29,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1361834896, now seen corresponding path program 1 times [2020-10-16 05:05:29,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:29,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020126716] [2020-10-16 05:05:29,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:29,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:29,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020126716] [2020-10-16 05:05:29,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:29,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:05:29,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047881492] [2020-10-16 05:05:29,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:05:29,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:29,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:05:29,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:05:29,771 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 127 [2020-10-16 05:05:29,772 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 28 transitions, 151 flow. Second operand 5 states. [2020-10-16 05:05:29,772 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:29,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 127 [2020-10-16 05:05:29,772 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:29,894 INFO L129 PetriNetUnfolder]: 174/357 cut-off events. [2020-10-16 05:05:29,894 INFO L130 PetriNetUnfolder]: For 1176/1572 co-relation queries the response was YES. [2020-10-16 05:05:29,896 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1407 conditions, 357 events. 174/357 cut-off events. For 1176/1572 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 1885 event pairs, 30 based on Foata normal form. 58/397 useless extension candidates. Maximal degree in co-relation 1388. Up to 316 conditions per place. [2020-10-16 05:05:29,897 INFO L132 encePairwiseOnDemand]: 120/127 looper letters, 6 selfloop transitions, 9 changer transitions 9/41 dead transitions. [2020-10-16 05:05:29,897 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 41 transitions, 275 flow [2020-10-16 05:05:29,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:05:29,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:05:29,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 590 transitions. [2020-10-16 05:05:29,900 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7742782152230971 [2020-10-16 05:05:29,900 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 590 transitions. [2020-10-16 05:05:29,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 590 transitions. [2020-10-16 05:05:29,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:29,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 590 transitions. [2020-10-16 05:05:29,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:05:29,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:05:29,904 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:05:29,904 INFO L185 Difference]: Start difference. First operand has 47 places, 28 transitions, 151 flow. Second operand 6 states and 590 transitions. [2020-10-16 05:05:29,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 41 transitions, 275 flow [2020-10-16 05:05:29,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 41 transitions, 268 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 05:05:29,908 INFO L241 Difference]: Finished difference. Result has 51 places, 32 transitions, 216 flow [2020-10-16 05:05:29,908 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=51, PETRI_TRANSITIONS=32} [2020-10-16 05:05:29,908 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2020-10-16 05:05:29,908 INFO L481 AbstractCegarLoop]: Abstraction has has 51 places, 32 transitions, 216 flow [2020-10-16 05:05:29,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:05:29,909 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:29,909 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:29,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 05:05:29,909 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:29,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:29,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1401255375, now seen corresponding path program 1 times [2020-10-16 05:05:29,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:29,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549505043] [2020-10-16 05:05:29,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:29,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:29,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549505043] [2020-10-16 05:05:29,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:29,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 05:05:29,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141667830] [2020-10-16 05:05:29,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 05:05:29,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:29,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 05:05:29,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 05:05:29,996 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 127 [2020-10-16 05:05:29,997 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 32 transitions, 216 flow. Second operand 6 states. [2020-10-16 05:05:29,997 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:29,997 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 127 [2020-10-16 05:05:29,997 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:30,124 INFO L129 PetriNetUnfolder]: 102/230 cut-off events. [2020-10-16 05:05:30,124 INFO L130 PetriNetUnfolder]: For 983/1291 co-relation queries the response was YES. [2020-10-16 05:05:30,125 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1229 conditions, 230 events. 102/230 cut-off events. For 983/1291 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1117 event pairs, 3 based on Foata normal form. 65/284 useless extension candidates. Maximal degree in co-relation 1207. Up to 204 conditions per place. [2020-10-16 05:05:30,126 INFO L132 encePairwiseOnDemand]: 120/127 looper letters, 4 selfloop transitions, 13 changer transitions 11/45 dead transitions. [2020-10-16 05:05:30,127 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 45 transitions, 398 flow [2020-10-16 05:05:30,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 05:05:30,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 05:05:30,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 688 transitions. [2020-10-16 05:05:30,130 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7739032620922385 [2020-10-16 05:05:30,130 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 688 transitions. [2020-10-16 05:05:30,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 688 transitions. [2020-10-16 05:05:30,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:30,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 688 transitions. [2020-10-16 05:05:30,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 05:05:30,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 05:05:30,134 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 05:05:30,134 INFO L185 Difference]: Start difference. First operand has 51 places, 32 transitions, 216 flow. Second operand 7 states and 688 transitions. [2020-10-16 05:05:30,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 45 transitions, 398 flow [2020-10-16 05:05:30,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 336 flow, removed 26 selfloop flow, removed 4 redundant places. [2020-10-16 05:05:30,140 INFO L241 Difference]: Finished difference. Result has 54 places, 34 transitions, 242 flow [2020-10-16 05:05:30,140 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=242, PETRI_PLACES=54, PETRI_TRANSITIONS=34} [2020-10-16 05:05:30,140 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 21 predicate places. [2020-10-16 05:05:30,140 INFO L481 AbstractCegarLoop]: Abstraction has has 54 places, 34 transitions, 242 flow [2020-10-16 05:05:30,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 05:05:30,141 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:05:30,141 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:05:30,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 05:05:30,141 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:05:30,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:05:30,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1574261773, now seen corresponding path program 1 times [2020-10-16 05:05:30,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:05:30,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385403917] [2020-10-16 05:05:30,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:05:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:05:30,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:05:30,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385403917] [2020-10-16 05:05:30,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:05:30,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:05:30,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963857690] [2020-10-16 05:05:30,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:05:30,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:05:30,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:05:30,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:05:30,222 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 127 [2020-10-16 05:05:30,223 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 34 transitions, 242 flow. Second operand 7 states. [2020-10-16 05:05:30,223 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:05:30,223 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 127 [2020-10-16 05:05:30,223 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:05:30,310 INFO L129 PetriNetUnfolder]: 52/141 cut-off events. [2020-10-16 05:05:30,310 INFO L130 PetriNetUnfolder]: For 580/853 co-relation queries the response was YES. [2020-10-16 05:05:30,311 INFO L80 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 141 events. 52/141 cut-off events. For 580/853 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 622 event pairs, 0 based on Foata normal form. 67/196 useless extension candidates. Maximal degree in co-relation 715. Up to 108 conditions per place. [2020-10-16 05:05:30,311 INFO L132 encePairwiseOnDemand]: 120/127 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2020-10-16 05:05:30,312 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 36 transitions, 292 flow [2020-10-16 05:05:30,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 05:05:30,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-16 05:05:30,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 772 transitions. [2020-10-16 05:05:30,315 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7598425196850394 [2020-10-16 05:05:30,315 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 772 transitions. [2020-10-16 05:05:30,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 772 transitions. [2020-10-16 05:05:30,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:05:30,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 772 transitions. [2020-10-16 05:05:30,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-16 05:05:30,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-16 05:05:30,320 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-16 05:05:30,320 INFO L185 Difference]: Start difference. First operand has 54 places, 34 transitions, 242 flow. Second operand 8 states and 772 transitions. [2020-10-16 05:05:30,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 36 transitions, 292 flow [2020-10-16 05:05:30,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 36 transitions, 227 flow, removed 20 selfloop flow, removed 8 redundant places. [2020-10-16 05:05:30,324 INFO L241 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2020-10-16 05:05:30,324 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2020-10-16 05:05:30,325 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2020-10-16 05:05:30,325 INFO L481 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2020-10-16 05:05:30,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:05:30,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 05:05:30,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:05:30 BasicIcfg [2020-10-16 05:05:30,332 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:05:30,335 INFO L168 Benchmark]: Toolchain (without parser) took 4915.09 ms. Allocated memory was 249.6 MB in the beginning and 429.4 MB in the end (delta: 179.8 MB). Free memory was 204.9 MB in the beginning and 351.4 MB in the end (delta: -146.5 MB). Peak memory consumption was 33.4 MB. Max. memory is 14.2 GB. [2020-10-16 05:05:30,336 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 249.6 MB. Free memory was 227.6 MB in the beginning and 226.8 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-16 05:05:30,338 INFO L168 Benchmark]: CACSL2BoogieTranslator took 764.45 ms. Allocated memory was 249.6 MB in the beginning and 309.9 MB in the end (delta: 60.3 MB). Free memory was 204.1 MB in the beginning and 264.4 MB in the end (delta: -60.3 MB). Peak memory consumption was 32.3 MB. Max. memory is 14.2 GB. [2020-10-16 05:05:30,339 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.31 ms. Allocated memory is still 309.9 MB. Free memory was 264.4 MB in the beginning and 261.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:05:30,344 INFO L168 Benchmark]: Boogie Preprocessor took 30.35 ms. Allocated memory is still 309.9 MB. Free memory was 261.9 MB in the beginning and 260.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-16 05:05:30,345 INFO L168 Benchmark]: RCFGBuilder took 480.97 ms. Allocated memory is still 309.9 MB. Free memory was 260.2 MB in the beginning and 235.7 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:05:30,351 INFO L168 Benchmark]: TraceAbstraction took 3575.42 ms. Allocated memory was 309.9 MB in the beginning and 429.4 MB in the end (delta: 119.5 MB). Free memory was 235.7 MB in the beginning and 351.4 MB in the end (delta: -115.6 MB). Peak memory consumption was 3.9 MB. Max. memory is 14.2 GB. [2020-10-16 05:05:30,359 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 249.6 MB. Free memory was 227.6 MB in the beginning and 226.8 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 764.45 ms. Allocated memory was 249.6 MB in the beginning and 309.9 MB in the end (delta: 60.3 MB). Free memory was 204.1 MB in the beginning and 264.4 MB in the end (delta: -60.3 MB). Peak memory consumption was 32.3 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 58.31 ms. Allocated memory is still 309.9 MB. Free memory was 264.4 MB in the beginning and 261.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 30.35 ms. Allocated memory is still 309.9 MB. Free memory was 261.9 MB in the beginning and 260.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 480.97 ms. Allocated memory is still 309.9 MB. Free memory was 260.2 MB in the beginning and 235.7 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3575.42 ms. Allocated memory was 309.9 MB in the beginning and 429.4 MB in the end (delta: 119.5 MB). Free memory was 235.7 MB in the beginning and 351.4 MB in the end (delta: -115.6 MB). Peak memory consumption was 3.9 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 821 VarBasedMoverChecksPositive, 53 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 86 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 75 PlacesBefore, 33 PlacesAfterwards, 63 TransitionsBefore, 21 TransitionsAfterwards, 1250 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 47 TotalNumberOfCompositions, 2211 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 43 SDtfs, 26 SDslu, 21 SDs, 0 SdLazy, 205 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=242occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 139 ConstructedInterpolants, 0 QuantifiedInterpolants, 5373 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...